
Step 1: Identify the parallelograms within the given structure:
Step 2: Listing out the parallelograms:
Total parallelograms = 4 + 3 = 7.

Arun’s present age in years is 40% of Barun’s. In another few years, Arun’s age will be half of Barun’s. By what percentage will Barun’s age increase during this period?